EventSystem.h

Go to the documentation of this file.

#ifndef DENGINE_EVENTSYSTEM_H
#define DENGINE_EVENTSYSTEM_H

#include <SDL.h>
#include <vector>
#include <functional>
#include <unordered_map>
#include <string>
#include <memory>
#include <map>
#include "GameStates.h"

namespace dengine {
    struct CustomEventData {
        // Define custom data fields here
        int intValue;
        std::string stringValue;
    };

    class EventSystem {
    public:
        EventSystem();

        typedef std::function<void(SDL_Event&)> EventCallback;
        std::map<Uint32, EventCallback> eventCallbacks;

        void RegisterEventCallback(Uint32 eventType, EventCallback callback) {
            eventCallbacks[eventType] = callback;
        }

        void DeregisterEventCallback(Uint32 eventType) {
            eventCallbacks.erase(eventType);
        }

        void processEvents(){
            SDL_Event event;

            while (SDL_PollEvent(&event)) {
                if (event.type == SDL_QUIT) {
                    GameState::GetInstance().setGameState(GAMESTATES::Quit);
                }

                // Check if there's a registered callback for this event type
                if (eventCallbacks.find(event.type) != eventCallbacks.end()) {
                    // Call the registered callback function passing the event as an argument
                    eventCallbacks[event.type](event);
                }
            }
        }

        void cleanup();
    };
}
#endif //DENGINE_EVENTSYSTEM_H